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51.
Random behaviour, perfectly controlled by deterministic laws, is the seemingly paradoxical definition of ‘chaos’. Hence, chaos theory reconciles order and disorder, and portrays an evolutionary universe based upon a delicate interplay of chance and necessity. These findings have raised fundamental questions regarding the nature of reality and humankind's dialogue with reality. In response, many theorists, both within and beyond the natural sciences, are heralding an emerging paradigm. In the context of education, the assumptions of the emerging paradigm posit learners in a creative process in which the evolution of knowledge and the participant's impact upon each other in a manner that remains ambiguous until the chance has been taken. Explorations of this vision of learning, and the philosophical assumptions, from which it is derived, have the capacity to promote and enrich the current contestation in environmental education. This article presents an example of such an exploration. Specifically, this exploration outlines the essence of chaos theory and the evolutionary capacity of chaotic systems, the philosophical implications of chaos theory both in general and for education, and compares the relations between Doll's (1986, 1988, 1989, 1992, 1993) curriculum vision based on chaos theory and critical education for the environment as outlined by Tien (1993).  相似文献   
52.
53.
Little research has examined seasonal differences in physical activity (PA) levels among children. Proxy reports of PA were completed by 1,715 parents on their children in Edmonton, Alberta, Canada. Total PA (TPA) minutes were calculated, and each participant was classified as active, somewhat active, or inactive. Logistic regression models were conducted to examine associations between PA status and seasons. Significant seasonal differences were observed for TPA, weekday PA, weekend PA, and active play. Children were significantly more likely to be physically active in the summer and spring and somewhat physically active in the summer and fall, relative to winter Children living in cold climates are less likely to be physically active in the winter.  相似文献   
54.
Performance support systems are mechanisms enabling users) productivity while reducing training expenses as support is being delivered in real time, often eliminating the need for costly pre‐performance training. Mobile technologies have created new opportunities for improved performance support systems, especially for tasks performed outside the offi ce. This article describes the fi rst mobile learning and performance support initiative taken by the Israeli Air Force. The project included the development and eff ectiveness pilot study of a learning and performance support application delivered via tablet to helicopter engine technicians. The application provided support videos and illustrations of maintenance routines, thereby enabling learning and practicing at the same time. Pilot study results show high performance levels of application users compared to those applying traditional methods. Results also show that self‐effi cacy levels were not aff ected by the successful performance achieved when using the mobile performance support application. Plans to expand mobile support use are also described.  相似文献   
55.
Abstract

The purpose of this investigation was to compare the peak physiological responses among four protocols that employed different amounts of handweighted exercise in 16 males (aged 26.3 ± 4.1 years). The four protocols were (a) uphill treadmill running (UR; 3.36 m-s1, 2.5% grade increase-3 min1); (b) uphill treadmill walking while pumping 1.36kg handweights (HW) (UWHW; 1.79ms1, 5.0% grade increase-3 min1; (c) treadmill walking while pumping .91-kg HW (WHW; 1.79 m-s1, 0% grade, .91kg HW increase-3 min1); and (d) standing in place and pumping HW (SHW; arm work as described in WHW). It was hypothesized that the peak responses would be inversely proportional to the estimated muscle mass activated (i.e., UR = UWHW > WHW > SHW). Dependent variables included peak oxygen uptake (VO2 peak), peak heart rate (HRpeak), peak ventilation (Vepeak), and peak respiratory exchange ratio (RERpeak). No differences were noted between UR and UWHW with respect to any of the dependent variables. All variables (except RERpeak) were greater (p < .01) in UR and UWHW than either WHW or SHW. RERpeak was greater (p < .01) in UR and UWHW than in WHW. VO2peak and HRpeak were greater (p < .01) in WHW when compared to SHW. Mean VO2peak was 97.5, 69.7, and 60% of UR for UWHW, WHW, and SHW, respectively. Therefore, walking and pumping handweights provides a maximal stimulus to the oxygen transport system.  相似文献   
56.
Educational technology research and development - In this critical literature review, we seek to understand why multidimensional, psychological measures of human emotion that have been popular in...  相似文献   
57.
The interdisciplinary nature of Computer Science Education as a field of study is a complicating factor when authors are choosing appropriate journals and conferences for publishing research results. This paper reports a survey of 42 such publications in order to identify the types of paper frequently accepted for publication in each. We review existing taxonomies developed for the general fields of Computer Science and Education, and from this starting point, we develop a novel faceted taxonomy, specifically aimed to help new researchers in the field understand what types of papers are published and where they appear. Our results confirm previous studies indicating the predominance of practice-based, technology-driven reports. We also observe certain differences in educational themes between those found in publications grounded in the Computer Science Education corpus and those emerging from more general Higher Education literature.  相似文献   
58.
Part of a multimethod ethnographic study that aimed to explore the knowledge of local parents concerning children learning to talk is described. The study was carried out with parents from several different ethnic and language groups in a socially disadvantaged part of Sheffield, a large city in the northeast of England.
In the phase of the study reported here, parents (either English, Urdu/Punjabi and Arabic speakers) took part in interviews, as well as contributing to the validation of the project. This study found that parents from diverse cultural and linguistic backgrounds living in this socially disadvantaged area, believed learning to talk to be very important and that family, community, including faith community, and professionals, have roles in promoting learning to talk. They indicated that local community groups, including faith communities, could play a positive role in supporting and developing their knowledge.
This paper will be of interest to those seeking innovative ways to support parents in socially excluded communities, particularly parents of children learning to talk, and so contribute to better outcomes for children, families and communities. It also contributes to our understanding of the development of parental knowledge about learning to talk in socially disadvantaged communities.  相似文献   
59.
This paper looks at the implementation of the DESD from a global perspective. It takes the position that quality education is fundamental for learning how to live sustainably, and that the DESD needs to be better positioned in the education landscape and conceived as a global social movement that must be fostered and nurtured for the well-being of humankind. It suggests that, while there has been progress, much remains to be achieved. Several key challenges are identified. With regard to overcoming these obstacles, it focuses on macro-level strategies that would allow the development of environments in which actions can take root and grow so that the work of the DESD endures beyond the decade itself. Finally, it suggests that there are some opportunities that can be seized to make the task ahead easier to accomplish.  相似文献   
60.
In this study, I examine academic influences of the Committee on Institutional Cooperation Summer Research Opportunity Program’s mentoring component. Interviews with African American undergraduate student participants of the faculty–student mentoring initiative suggest mentorship’s influence upon the academic experiences of participants and illustrate the importance of faculty-directed research in preparing racial minorities for graduate education.  相似文献   
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